Using Calendar in Expression -urgent

Question

Hai
I need your help
I am using Toplink 9.0.4.5
In my application I use Calendar to represent the Date in DataBase
Employee {
Calendar joinDate ;
In Expresion Builder
Calendar cal= Calendar.getInstance();
expression.get("joinDate ").equal(cal);
In the database it has the same value as cal but it return null values ;
If use the java.util.Date it return the values.
But In our application they force to use the Calendar
What can I do..
They is any function…….. to solve this issue
Thanks in advance

Answer 1

It should work. The possible reason is if you store a Date object in DATE field, its time portion is all 0. When you create a Calendar with Calendar.getInstance(), its time is the time when the Calendar is created, which is not 0. Please make sure to set the time portion correctly including millisecond. The reason java.util.Date works is that when you create a java.util.Date without time portion, it's assumed to be 0.
You can make sure the Date expression is correct by turning on logging and checking the SQL. It has to be exactly the same as what's in the database.
Shannon